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How To Build A Shower Base For Walk In Shower: A Practical Guide in 2023

Building a shower base for a walk in shower is a relatively easy task that can be completed in a few hours. The first step is to gather the materials you will need which include: a sheet of plywood, a piece of felt, some tile adhesive, and tile grout. Next, you will need to cut the plywood to size and then attach the felt to the bottom of the plywood. Once this is done, you can begin to lay down your tiles. Start in one corner and work your way outwards, making sure to apply tile adhesive to each tile as you go. Once all of the tiles are in place, you can then begin to grout them. Again, start in one corner and work your way outwards. Once the grout is dry, you should have a fully functioning shower base!

What You’ll Need

-A level area to build the base on
-Shower pan liner
-Cement backer board
-Thinset mortar

Step 1: Prep the Area and Install the Shower Base

Before you begin, you’ll need to prep the area and install the shower base. This is a crucial step in ensuring that your shower base is level and secure.

First, remove any existing flooring material in the shower area. Next, use a level to mark out where the shower base will be installed. Once you have the location of the base marked out, use a drill to create pilot holes in the marked area.

Now it’s time to install the shower base. Begin by setting the base into place and making sure that it is level. Once the base is level, use a caulk gun to apply a generous bead of sealant around the perimeter of the base. Finally, use screws to secure the base to the floor.

Step 2: Install the Shower Base

After the subfloor is prepped and you have your waterproofing and drain in place, you’re ready to install the shower base.

Base installation begins with a layer of mortar placed directly on the subfloor. The mortar should be at least ¾-inch thick and sloped away from the drain to ensure proper drainage. Once the mortar is in place, set the base on top of it, being sure to level it out as you go.

Use shims if necessary to make sure the base is level before moving on. Once the base is level and set in place, apply silicone caulk around the perimeter where it meets the wall to create a watertight seal.

Allow the caulk to dry for at least 24 hours before continuing with shower installation.

Step 3: Finish Up

Now that the framing and base are complete, it’s time to finish up your shower. First, install any doors or panels that will enclose the shower area. Then, add any shelves or other features that you desire. Finally, apply grout to the joints between the tiles and caulk around the perimeter of the shower base. Once everything is in place, turn on the water and enjoy your new shower!


Building a shower base for a walk in shower is not as difficult as it may seem. With the right tools and materials, you can easily build a sturdy and reliable base that will last for years. Follow the steps outlined in this article and you’ll have your new shower base finished in no time.

Samantha Allen

Samantha Allen

Samantha Allen is an authority on high-end spa treatments and steam showers. Through her blog, she provides insight and guidance into home improvement, deluxe spas, and steam showers. She offers comprehensive instructions for those wishing to maximize their at-home spa experience. Samantha has devoted countless hours to researching and evaluating various steam shower models to determine the finest ones available. Moreover, she is a practiced DIYer who has created video tutorials on a variety of topics related to home renovation and luxurious spa activities.